Is CVE-2026-124029 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-124029 being exploited in the wild.

How severe is CVE-2026-124029?

Medium severity, with a CVSS score of 5.7, published 6 November 2026.

Is there a fix for CVE-2026-124029?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-124029 attacked?

It is attacked with local access.

Am I affected by CVE-2026-124029?

Check whether you run Kopia at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-124029: Kopia path traversal in copyDirectoryContent during restore

CVE-2026-124029 · Severity: medium · CVSS 5.7 · Published 2026-11-06

Kopia is a cross-platform backup tool that restores files and directories from encrypted snapshots. A path traversal vulnerability in the restore function allows attackers with repository write access to craft malicious snapshot entries that bypass the restore directory boundary, potentially writing files anywhere on the victim's filesystem. This could lead to arbitrary file creation or modification outside the intended restore location.

Quick answers

Is CVE-2026-124029 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-124029 being exploited in the wild.
How severe is CVE-2026-124029?: Medium severity, with a CVSS score of 5.7, published 6 November 2026.
Which products and versions are affected?: Kopia through 0.23.1.
Is there a fix for CVE-2026-124029?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-124029 attacked?: It is attacked with local access.
Am I affected by CVE-2026-124029?: Check whether you run Kopia at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability exists in the copyDirectoryContent function of the restore module, where directory manifest entries with traversal sequences like '..' are not properly validated before extraction. An attacker with write access to the repository can craft snapshot entries with crafted names that escape the restore directory path. The issue affects restore operations with default settings and requires the attacker to have prior write access to the repository.

Affected products

Kopia Kopia through 0.23.1

Timeline

2026-11-06: disclosed

References

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